Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6836587 | Optical transmission device and optical transmission system employing the same | Takayuki Suzuki, Hiroyuki Nakano | 2004-12-28 |
| 6829408 | Optical amplifier, optical transmission equipment, optical transmission system, and method thereof | Hiroyuki Nakano, Takayuki Suzuki | 2004-12-07 |
| 6771854 | Optical transmission system and optical coupler/branching filter | Tadashi Matsuoka, Tetsushi Nakano | 2004-08-03 |
| 6674938 | Optical amplifier, optical transmission equipment, optical transmission system, and method thereof | Hiroyuki Nakano, Takayuki Suzuki | 2004-01-06 |